David Rosen (born September 21, 1938, in San Francisco[1]) is an expert in nineteenth- and early twentieth-century Italian opera.
He is noted for having discovered the complete score of Messa per Rossini, presumed lost, in the archives of the Italian music publishing house G. Ricordi & Co in 1986.
[3] He also discovered in the Bibliothèque Nationale a passage in Verdi's manuscript score for Don Carlos which had had to be cut in order to ensure that the opera's premiere would finish before midnight.
[5] He is an emeritus professor of musicology in the Department of Music at Cornell University.
He has worked also with the Centro studi Giacomo Puccini and the Fondo Leoncavallo.